What protects plants from threats that could potentially kill the plant? PLZ HELP
A: Roots
B: Xylem and phloem
C: Waxy coating on top of leaves
D: Structures for defense

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers